searchParamsToObject.ts

const searchParamsToObject = (params: URLSearchParams) => {
  const searchParamsAsObject: Record<string, string | string[]> = {}

  Array.from(params.entries()).forEach(([key, value]) => {
    const existingValue = searchParamsAsObject[key]

    if (existingValue) {
      searchParamsAsObject[key] = Array.isArray(existingValue)
        ? [...existingValue, value]
        : [existingValue, value]
    } else {
      searchParamsAsObject[key] = value
    }
  })

  return searchParamsAsObject
}